Line guide for copyholders



Oct. 5, 1943. H, VAN BUREN 2,331,149

LINE GUIDE FOR COPYHOLDERS Filed July 22, 1943 3 i 6 5 supreme? 15 1.936,

N 5a. es rec vds fnv .'rghf d lf-t JEAN HV 'Patented Oct. 5', 1943 i UNITED STATE/s APari-:rrr oFFicE r2,331,149 LINE GUIDE FOB COPYHOLDEBF Harry Van Buren, Carlsbad, N. Mex. Application July 22, 1943, Serial No. 495,754

This invention relates to improvements in line guides for typewriter copy holders, and its objects are as follows:

First, to provide a line guide which is readily attachable and detachable from any known style of copy holder, one of the outstanding features of the line guide being the provision of a magnifying means by which the copyist may not only concentrate upon the given line but through which the line is magnified to sumcient proportions to make it easily read.

Second, to provide the foregoing magnifying means in the form of a tube which is iilled with a solution of glycerin and water, a secondary purpose of said tube being to smooth the copy matter and thus prevent the copyist from getting a distorted image of the line of text thereunder.

Other objects and advantages will appear in the following specification, reference being had to the accompanying drawing, in which:

Figure 1 is a front elevation of the improved line guide, showing it applied toga typewriter copy holder.

Figure 2 isl a line guide and copy holder.

Figure 3 is an end elevation illustrating the two positions which the line guide may occupy with respectto the copy holder.

As will be seen especially from Fig. l, the improved 'line guide is used as a supplement to a known style of typewriter copy holder, its especial purpose beingto magnify the lines of text one at a time. Further, it is easily seen that the improved line guide may be furnished with independent mounts of its own, that is to say, it can be used in conjunction with any appropriate copy support without necessarily depending upon the known structural elements of a commercial copy holder.

However, the latter combination is preferred because it enables keeping the line guide down to simple proportions and structure, and enables the copyist to use or not use the magnifying line' guide at will. With the latter understanding in mind, attention is directed to the drawing. The panel of a known style of typewriter copy holder is designated I. The page containing the. text to be copied is designated 2. 3 indicates the normal size of the printed or typewritten matter, and 4 is a specimen of the magnied text.

The copy holder here shown includes a stationary blade 5 which operates as the known line guide. This blade is carried by a rectangular frame 6 including the side arms l. The panel I is adapted to be moved up with a steppedhmotion end of springs 20,

perspective view of one end of the tex 3 Claims. (Cl. 1Z0-29) by mechanism with which the invention has no concern. The invention is attached to the rectangular frame, and is constructed in the followingmanner.- d

A thin, round tube 8 of optical glass is lled with a solution 9 (Fig. l) composed of glycerin and water. This solution is sealed in the tube by end caps I0, each of which has a pintle II by means of which the tube is supported by the respective arms I2.

Each pintle is inserted in a slot I3 in one end of the respective arm (Fig. 2), where it is held when the base of an oppositely directed slot I4 in a pivoted clip KI5 is brought into contact therewith. Each clip is'pivoted to the respective arm, and it has a nger-piece I 6 by which it is actuated.

The opposite ends of said arms are attached upon a small transverse rod II which, in turn, is pivoted through the arms I8 of clamps I9. The other arms of said clamps provide mounts for one the other end of said springs being attached to the arms I 2.

Lock nuts 2 I are screwed onto the rod Il at its ends, and each arm I2 is mounted and held rm- 1y on the respective end of the rod` between a pair of the lock nuts. The locknuts are intended to be tight, that is to say, they hold the arms I2 rmly to the rod I1 which is pivoted through holes inthe arms I8 of the clamps I9, thus permitting the line guide to be swung either up (full lines Fig. 3). or down (dotted lines), depending on whether or not the copyist has an immediate need for magnifying the line of text. The spring 20 holds the magnifying line guide against the page 2 in either of the two positions.

Each foregoing clamp I9 is affixed to a side arm 1 by a screw 22 which is inserted through an inner plate 23 where it has a wing nut 24. This plate is ilanged at 25, and the flange is intended to engage on the top edge of the arms and so prevent turning.

'I'he magnifying tube 8, with the proper proportions of glycerin and water will pick up and show the image of one line only of typewritten t or other printed matter, as illustrated at 4 (Fig. 1). The degree oi' magnication may be increased or decreased by varying the proportions of glycerin and water. Thus the line guide is adjustable, so to speak, to diil'erent eye-sights,

The operation is readily understood. It has been pointed o'ut that when the magnifying tube 8 is lowered (dotted lines, Fig.3) it is temporarily out of the copyists way. 'The intended use of the line guide is depicted in Fig. l, where the magnifying means not only singles out the line of under the tension .of the springs 20 said tube affords the additionaladvantage of smoothing the L f paper so that the magnified image 4 will not be v distorted.

As the copy holder is operated to raise the page 2 step-by-step, the .friction of the copy l removing the tube 8. It is'intended that the copyist shall be suppliedl with several diameter sizes of tubes, and with tubes of diierent degrees' of magnication. In order to secure the proper vision of the image of the line magnified by the tube, the cOPySt merely inserts the proper tube and raises andelowers the copy holders to the proper place. The virtue of a larger tube than thezon'e shown is that more than one line may be picked up at a time. f

I claim:

1. A line guide comprising magnifying means for. producing an enlarged image of at least one line of text, clamps to be affixed to the supporting means of the line .inder of a copy holder, arms carrying the magnifying means and being pivotally connected to the clamps so that the arms and magnifying means can swing, and

springs connected at their ends with the respecthe text.

2. A line 'guide comprising magnifying means for producing an enlarged image oi. at least one against the tube' causes said tube to revolve v-slowly. This avoids any appreciable wear of the Vtube which might occur were the latter stationl on the 3. A line guide comprising magnifying means line of text, clamps which are detachably secured to the supporting means of the line finder of a copy. holder, a pair of arms,.each having means to which the magnifying means is detachably connected in 'a working position, means by which said arms are movably mounted on theclamps so that saidgarms and magnifying means can swing. and springs connected at their ends to the respective arms and clamps holding the magnifying vmeans under tension against a page copy holder containing the text.

' which consists of cylindrical paper pressing means, end caps for the pressing means. each of said caps having a pintle, arms to one end 'of each oifwhichthe respective caps are attached, there being clips on the arms to catch and hold the pintles, clamps to be secured to supporting means in reference to a page of text to be copied, a rod both connecting the clamps and providing pivots for the arms so that the armsand pressing means can be swung in reference tcM the page, and springs connected at their ends to the respective clamps and arms to hold the pressing means against the paper under tension.

maar VAN BUREN. y 

